Diaphragm pump



June 24, 1930.

C. I. LONGENECKER DIAPHRAGM PUMP Filed April 25, 1928 4 Sheets-Sheet 1 ChasJlLongenec/kr;

f My June 24, 1930.

c. l. LONGENECKER DIAPHRAGM PUMP Filed April 23, 1928 4 Sheets-$heet 2 June 24, 1930. c. LONGENECKER DIAPHRAGM PUMP Filed April 23, 1928 4 Sheets-Sheet 3 RN s R 9w W 7 5% Q QM .W x xv m fit b ChasifLorggeneckez;

n 4, 1930' c. l. LONGENECKER 1.767.934

DIAPHRAGM PUIP Filed April 25, 1928 4 Sheets -Sheet 4 k l (/4 j gwomto'o haillfloiggenecl ef;

Patented June 24, 1930 LIUNITED CHARLES I. LONGENECKER, on MILWAUKEE, Wisconsin, assrenon T0 CHAIN BELT I COMPANY, or MILWAUKEE,,WISCONSIN, A CORPORATION on WISCONSIN DIAPHRAGM PUMP Application filed April 23,

This invention relates to diaphragm water pumps and has for one of its objects to providewan apparatus of this character which willbe simple in construction, comparatively inexpensive to manufacture, and more er cient in use than those which 'haveller'etoforeqbeen proposed; I I

A-further object of the invention is to provide a pump of the class described so constructedand arranged as to facilitate ready .a'ccessto the diaphragm for the purpose of inspectionand renewal when the latter becomes worn or ineifective. Y I

A still further. object of the invention is to provide a water pump of the diaphragm type in which the diaphragm is provided with a. discharge port controlled by a valve which is maintained submerged and watensealed during the operation of the pump;

With the above'and other objectsin view, which will appear as the description 'proceeds, the invention consists in thenovel details of construction and combinations of parts more fully hereinafter described and particularly pointed out in the appended claim. I

Referring to the accompanying "drawings forming a part of this specification in which like reference characters designate like parts in all the viewszr v 1 Fig. 1 is a side-elevational View of a pump constructed in accordance with the present invention. T 4 Y Fig. 2 is "a central longitudinal sectional view of the pump shown in Fig.1.

Fig. 3 is an end elevational view partly in sectionas seen from the right o'fFigsJl and 2.

F ig. 4 is a transverse vertical'sectional view taken a'pproximately'on the plane indicated bythe' line 4-4 of Fig. 2, and

Fig. 5 is a side elevational view'of the pump-showing the parts in inoperative position for'inspe'ction and renewal of the diaphragm;

In'the said drawings numerallO indicates a suitable supporting frame upon the transverse members 11 of which is mounted the .basemember 12 of the pump. This base member ishollow to provide an intake chamber 13 having an inlet port 14 controlled by a.

1928. Serial no. 272,079.

suitable check valve 15 (see Fig. 3). This weights 18' and 19 adjacent its lower portien for facilitating the gravity closing of the valve. Y r

i The upper portion'of the base member 12 is open and the said member is surmounted by the pump top member 20, which is adapted to be secured in place by suitable bolts 21 and nuts 22'c1early shown in Figs. 1 and The top member 20 is also hollow to provide an outlet chamber 23, and a flexible diaphragm 24 of rubber, metal or other suitable material is normally interposed between the top member 20 and base member 12 with its outer edge clamped between the said members, as shown in Fig. 2. The said diaphragm 24 is perforated at its center to provide a port or discharge 25, which port is controlled byan upwardly opening valve 26'. Means are provided for flexing the dia -ahragm 24,

comprising a diaphragm connecting rod 27 which is provided with a pair of downwardly {extending pins or studs 28, the lower portions of which pass through suitable spacing members or washers 29 and 30, as wellas through the diaphragm 24, and are secured by nuts 31. The valve member 26is provided with a pair of openings 32 through which the pins or studs 28 pass, whereby the said studs serve as guides for the said valve as will be read ily understood.

The diaphragm connecting rod 27 extends outwardly through an opening 33 in the upper wall of the top member 20 and is pivotally connected by a pin 34with one end of a ,55 inlet member and provided with suitable lever or rocker arm 35 which is pivotally v mounted as at 36 in ears 3? carried by the top ,member 20.. The other end of the lever or end of which is provided with an eccentric strap 46 engaging around an eccentric l7 mounted upon a transverse shaft 48. Said shaft 48 carries a worm wheel 49 which is driven by a worm 50 carried by a shaft 51, which is connected through a suitable clutch mechanism 52 with the fly wheel 53 of an internal combustion engine or any other suit able source of power not shown. Thel-owcr part of the transmission housing 40 is adapted to be partially filled with lubricating oil' whereby the transmission Wlll be effectively lubricated and rendered noiseless. In order to prevent theentranceof foreign matter necessary to replace the flexible diaphragms ment.

into the transmission housing where the connecting rod 39 enters the said housing, I prefer to provide an outwardly extend ng tube or sleeve 55 surrounding the connecting rod 39 and a telescoping sleeve or tube 56 carried by the said connecting rod as clearly shown in Fig. 2, which construction will ef- .raised to such a position that its lowermost wall 58 is in a plane higher than that ever assumed by the discharge valve 26; It results from such a construction that a pool of water will bealways maintained in the dis charge chamber 23 above the diaphragm 24, the level of which will be that of the wall 58 of the discharge spout and sincethis water level is higher than" any plane ever assumed by the valve 26it follows that the said valve will at all times be water sealed. Should the valve become fouled, or should it stick in a partially opened position upon the-upstroke of the diaphragm flexing. means,

water and'not air will leak past the said valve into the intake chamber 13 and the suction'of the pump -will thereby be preserved.

In pumpsof this type it is frequently such as 24: and the present invention, as above stated, contemplatesgmean's for facilitating access to these diaphragms for such replace To this end means are provided whereby the top member 20, together with the diaphragm or diaphragm flexing means, 27 and 35, carriedbysaid top member,- may be readily swung to one side, as shown in Fig. 5, thereby exposing the diaphragm to view and'placing itin a position whereby it may be readily removed andrenewed. This is accomplished by providingthe detachable clean-out plate 60, which normally closes the clean-out opening 61 of the pump base 12,

with an enlargement or projection 62 which is adapted to serve as a pivot about which the top member 20 may be swung from the position shown in Fig. 1 to that shown in Fig. 5. The plate is provided with a bifurcation or groove 63 which receives a web 64 formed upon the top "member 20 and which serves to prevent lateral movement of the top member relative. to the base member when the parts are in the position shown in 5. J p

In order to swing thetop member 20 and its associated parts'to the position shown in Fig. 5, it'is of'course necessary to disconnect the diaphragm-flexing mechanism from the power transmission mechanism and this is accomplished by relieving the set screw 65 and sliding the connecting pin 38 to thepog sition shown in Fig, whereby the rocker.

arm 35 is disconnected from the connecting rod 39 as will be readily understood. r

During the movement of the parts to the inoperative position shown in Fig. 5 itis desirable to maintainthe diaphragm and flexing mechanism against relative movement and this is accomplished by inserting a pin or rod 66 between the upper surface of the pump top member 20 as shown in dotted lines in Fig.2 and in full lines in Figs. 1 and 5, whichpin will serve to wedge the parts in the position shown and prevent them while the diaphragms from moving around arebemg changed.

v The general operation of the pump is simi lar to the ordinary diaphragm pumps, it being understood that uponpower bemg' applied to the diaphragm-flexing,mechanism 27 through the power transmission the said flexing mechanism will be reciprocated, thereby fiexing the diaphragm 24, which ac; tion serves upon the upward stroke to close the valve26 and create a suction in the'in take'chamber 13, while on the downward stroke the valve .26 is opened, thereby permitting water in the intake chamber "13 to pass through the port 25 into the discharge chamber 23. As above stated owing to the raising of the discharge spout 57, a'pool of water is always maintained above the diaphragm 24, which serves to water-seal the.

valve 26and prevent the entrance of air'into the intake chamber, should the said valve stick in an open position.

While one form of the invention has been illustrated and described it-is' obvious that those skilled in the art may'vary the details V of construction as well as the precise arrangement of parts, without departing from the spirit of the invention and therefore it is not wished to be limited to'the, above disclosure except 7 as may be requiredgby the claim. f

What I claim is: I

In a diaphragm water pump, a base meniber; a top member; a flexible diaphragm normally clamped between said base and top members; means carried by said top member connected to said diaphragm for flexing the latter; power means for actuating said flexing means; a readily detachable connection between said actuating means and said flexing means; and a removableclean-out plate carried by said base member provided with a portion for pivotally engaging said top member, whereby said top member, diaphragm and flexing means may be readily swung to an inoperative position to facilitate access to said diaphragm.

In testimony whereof I aflix my signature.

CHARLES I. LONGENECKER. 

